JPH04170079A - Laminated board for electrical use - Google Patents

Abstract

PURPOSE:To obtain a laminated board using unwoven cloth with a mark printed and a glass cloth as base materials by arranging a resin-impregnated glass cloth base material to the upper and/or lower surface of a resin-impregnated unwoven base material having a mark printed, providing a metal foil to the upper surface and/or lower surface of such base material and integrally laminating these materials. CONSTITUTION:A required number of sheets of resin-impregnated glass cloth base material are arranged to the upper and/or lower surface of unwoven cloth base material in order to give a mark to discriminate a manufacturer on the surface of laminated board surface. Moreover, a laminated board arranging a metal foil to the upper surface and/or lower surface is integrally laminated. The unwoven cloth used here is an inorganic fiber such as glass, asbest, etc. As the resin impregnated into the base material, fenol resin and epoxy resin, etc., are used. In addition, as a metal foil, copper, aluminum, etc., are used. For the integral lamination, a desired means such as a press, multistage press, etc., is used. Thereby, the glass unwoven cloth printing a mark of manufacturer can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrical laminate used in electronic/electrical equipment, computers, communication equipment, etc.

[Conventional technology]

Conventionally, laminates based on non-woven fabric and glass cloth do not have manufacturer's marks on the surface of the laminate, but it is desirable to include marks for ease of identification. has been done.

[Problem that the invention seeks to solve]

As described in the prior art section, the laminates made of nonwoven fabric and glass fabric do not have marks, which is inconvenient. The present invention has been made in view of the above-mentioned problems in the prior art, and its object is to provide a laminate whose base materials are a nonwoven fabric with marks and a glass fabric.

[Means for solving problems]

The present invention is a laminate in which a required number of resin-impregnated glass cloth substrates are arranged on the upper and/or lower surfaces of a resin-impregnated nonwoven fabric substrate on which a required number of marks are printed, and metal foil is further arranged on the upper and/or lower surfaces. Since the electrical laminated board is characterized by being formed by laminating and integrating the following, the above object can be achieved, and the present invention will be described in detail below.

The nonwoven fabric used in the present invention includes inorganic fibers such as glass and asbestos, polyester, polyamide, polyacrylic,
Non-woven fabrics, mats, etc. made of organic fibers such as polyvinyl alcohol, polyimide, polyphenylene sulfide, polyphenylene oxide, fluororesin, and natural fibers such as cotton, must have a manufacturer's mark, etc., and the mark can be placed on any number of sheets. You can put it in. The glass cloth is not particularly limited, and any commonly used glass cloth can be used as is. As the resin to be impregnated into the base material, phenol, epoxy, unsaturated polyester, polyimide, polyamide, polyphenylene oxide, polyphenylene sulfide, fluorocarbon resin, etc. are used, and if necessary, talc, clay, calcium carbonate, aluminum hydroxide, Inorganic powder fillers such as silica can be added. Further, the resin can be changed depending on the nonwoven fabric and the glass cloth. As the metal foil, single, alloy, or composite foils of copper, aluminum, iron, nickel, zinc, etc. can be used, and if necessary, an adhesive layer can be provided on one side of the metal foil. For lamination and integration, any means such as a press, multi-stage press, multi-roll, endless belt, etc. can be used.

The present invention will be explained below based on examples.

〔Example〕

A layer of 0.7 m thick epoxy resin-impregnated glass nonwoven fabric containing 30% by weight of talc is placed on the upper and lower surfaces of the stack.
A piece of glass cloth impregnated with I wta epoxy resin is placed on each sheet, and the top and bottom surfaces are coated with a 0.0-thick glass cloth.
A laminate with one 35m copper foil placed on each was molded at a pressure of 50
kg/cj, laminated at 165℃ for 120 minutes to a thickness of 1
．． A 6 m laminate was obtained.

[Comparative example]

A laminate with a thickness of 1.6 m was obtained in the same manner as in the example except that a nonwoven fabric without the manufacturer's mark was used.

The performance of the laminates of Examples and Comparative Examples is similar to the first ratio.

Table 1 [Effects of the Invention] The present invention is constructed as described above. It was confirmed that the electrical laminate having the structure described in the claims was easy to distinguish and was superior to the present invention.

Claims (1)

[Claims] (1) A laminate in which the required number of resin-impregnated glass fabric substrates are arranged on the upper and/or lower surfaces of a resin-impregnated nonwoven fabric substrate with the required number of marks printed on it, and metal foil is further arranged on the upper and/or lower surfaces. An electrical laminated board characterized by being formed by laminating and integrating the following.